While looking into the career of Captain Ronald Lindsay Johnson R.F.A (who is posthumously the centre of some controversy round these parts) I came across this mildly interesting footnote:
"Z.23 Medium Trench Mortar Battery was formed in March 1916 and initially was armed with French 58mm mortars."
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.